Viewed 4k times. Please enlighten me! Improve this question. Treb Treb If it's something you found online, didn't it come with instructions? If it's something you wrote yourself, how have you installed it before, to test it while developing it?
It comes with an installer, but I want to pack it together with some other stuff into my own installer, so that I can easily tweak every new Windows installation in my house. Is this ext2cow? I've been interested in that but I thought it was for linux only. Add a comment. Active Oldest Votes. Improve this answer. I already suspected that the INF way was rather complicated Come on, folks! There's a nice bounty to catch here! There are a number of ways you could approach this.
I wrote a TDI filter driver. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Each pointer is the block address of a block containing data for this inode. Singly Indirect Block Pointer : If a file needs more than 12 blocks, a separate block is allocated to store the block addresses of the remaining data blocks needed to store its contents. This separate block is called an indirect block because it adds an extra step a level of indirection between an inode and its data.
The block addresses stored in the block are all bit, and the capacity of stored addresses in this block is a function of the block size. The address of this indirect block is stored in the inode in the "Singly Indirect Block Pointer" field. Doubly Indirect Block Pointer : If a file has more blocks than can fit in the 12 direct pointers and the indirect block, a double indirect block is used.
A double indirect block is an extension of the indirect block described above only now we have two intermediate blocks between the inode and data blocks. The inode structure has a "Doubly Indirect Block Pointer" field that points to this block if necessary. Triply Indirect Block Pointer : Lastly, if a file needs still more space, it can use a triple indirect block. Again, this is an extension of the double indirect block.
So, a triple indirect block contains addresses of double indirect blocks, which contain addresses of single indirect blocks, which contain address of data blocks. The inode structure has a "Triply Indirect Block Pointer" field that points to this block if present. This image from Wikipedia illustrates what is described above pretty well. Directories are inodes which contain some number of "entries" as their contents. For instance the inode corresponding to the root directory might have an entry with the name of "etc" and an inode value of A directory inode stores these entries in a linked-list fashion in its contents blocks.
The total size of a directory entry may be longer then the length of the name would imply The name may not span to the end of the record , and records have to be aligned to 4-byte boundaries. Directory entries are also not allowed to span multiple blocks on the file-system, so there may be empty space in-between directory entries. Empty space is however not allowed in-between directory entries, so any possible empty space will be used as part of the preceding record by increasing its record length to include the empty space.
Empty space may also be equivalently marked by a separate directory entry with an inode number of zero, indicating that directory entry should be skipped. Directory entry information and file contents are located within the data blocks that the Inode points to.
Jump to: navigation , search. Category : Filesystems. Personal tools Log in. Namespaces Page Discussion. Views Read View source View history. About This site Joining Editing help Recent changes. In other languages Deutsch. This page was last modified on 12 July , at This page has been accessed , times. Contents 1 Basic Concepts 1. In other words, the number to shift 1, to the left by to obtain the block size.
In other words, the number to shift 1, to the left by to obtain the fragment size. Number of times the volume has been mounted since its last consistency check fsck. Number of mounts allowed before a consistency check fsck must be done. Linux Ext3 volumes can also be accessed. To do that, please read the FAQ section.
It installs a pure kernel mode file system driver Ext2fs. Ext2 volumes get drive letters for instance O:. Files, and directories of an Ext2 volume appear in file dialogs of all applications.
There is no need to copy files from or to Ext2 volumes in order to work with them. The file system driver Ext2fs. It uses the file cache of the Windows operating system. Therefore it is performant. The level of sophistication of the Ext2 file system driver implementation is comparable to Windows native file system drivers. The "Ext2 Installable File System" software package is distributed as a single executable solution, complete with all of the features. It is a setup wizard which installs and configures the Ext2 file system driver.
The screenshots section contains some images of it. Furthermore, "IFS Drives" is installed at the computer's control panel, which allows you to assign drive letters to Ext2 volumes.
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